The old engineer’s eyes still shone bright in the wrinkled brown face and his step as he came across the roomwas _____, though slow. [ ]

I can’t imagine what air we would be breathing in if we __________ anything to stop air pollution.

Lucy usually watches TV_______ Saturday evening.

Many parents prefer kindergartens to spend more timeteaching math and Chinese to help their kids _______ an early lead in primaryschool performance.

Is ____ possible that everyone likes the same clothes